Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b1014f8dd89062b…

MALICIOUS

PDF

88.7 KB Created: 2021-03-20 03:14:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 42f0bc80147bc6c0d8db2ec989b86e84 SHA-1: 4809fd76ab0dc2710632dbde4e3024f91966980c SHA-256: 2b1014f8dd89062bc20e51a8f01f8c008ab64cfb84c265dc6e06660855bb6876
66 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with several pointing to disposable hosting and potentially malicious domains, indicating a link farm or phishing attempt. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of many external URIs suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ponafet.ru/wix?keyword=clintonville+high+school+skyward PDF link annotation
    • http://kidunotofonaxiz.22web.org/xefobexaratuti.pdfIn PDF document text
    • http://apparentlyopt.com/80-90_dance_hits_remix_2016_mp3rdhxp.pdfIn PDF document text
    • http://soldatskaya6.ru/weekly_homework_sheet_q3_36wk0y.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446937/normal_5fe04ff23c2ab.pdfIn PDF document text
    • http://bonboxstudio.com/39189701669by4e9.pdfIn PDF document text
    • http://takefeduw.iblogger.org/kunogotun.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386092/normal_6031831b5fa20.pdfIn PDF document text
    • http://aycotoro7.xyz/tipezaoqdj2.pdfIn PDF document text
    • http://expressday.online/64291129105rsg1n.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480142/normal_5ff20e082f042.pdfIn PDF document text
    • http://damvglaz2.xyz/59228282808op35s.pdfIn PDF document text
    • http://fumigatoff.online/personality_test_for_careerwzdea.pdfIn PDF document text
    • http://santand-es.com/43711383978dv5dj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426957/normal_6037fb57d102a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4482415/normal_6044943c94f4a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://rivejekab.epizy.com/notification_icon_android_8.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/440b5cae-c426-4978-b3f4-2484a94742ae/planet_rothschild_volume_2_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ffb694ae-51bd-4635-9a6a-2934f5644571/sherlock_holmes_sinhala_novels_online_reading.pdfIn PDF document text
    • http://kadebenatoloxib.rf.gd/44584205322.pdfIn PDF document text
    • http://vudatuvabejosix.epizy.com/buxegozamurof.pdfIn PDF document text
    • https://d848e4b6-662b-4424-a759-963270729452.filesusr.com/ugd/30e015_f1aadfc58a6447bbb46d91ce741540c8.pdf?index=trueIn PDF document text
    • https://2a984544-7cb8-4a4d-9f60-e686f7994e39.filesusr.com/ugd/1434d3_d3285285ae134f47a38b57c3ed20ef9c.pdf?index=trueIn PDF document text
    • https://ec451167-49e0-489e-a150-d7dc0ecf9264.filesusr.com/ugd/fe0276_f963f306fea34408b4323a39cd3d5959.pdf?index=trueIn PDF document text
    • https://57fc24c6-ba7c-430a-bdae-05304608b610.filesusr.com/ugd/bc9c68_03969c80388a4a08bf2c84c349742b94.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/b629d5b8-d7a7-47a8-aaa2-2f959b13d459/72583830020.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011ba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BA3 5424 bytes
SHA-256: 63fe3bc4905137488c0b4e55d74c62993e7c5dc18cf1f650ef68a05e468956dd
font_01_sfnt_off00012e2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E2D 11432 bytes
SHA-256: eb9466b3496cb7f92d909fa9c7643c451d5f845bca3171992321c0285db55fb3

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